Telescopic chute



Jan. 17, 1961 2,968,382

J. F. OURY TELESCOPIC CHUTE Filed Deo. 2, 1957 5 Sheets-Sheet 1 HHIII HI J. F. oURY 2,968,382

TELEsCoPIC CHUTE 5 Sheets-Sheet 2 Jan. 17, 1961 Filed Deo. 2, 195'? x Nvmmmh |W@H| m. bw w Q a NW. WM. QQ, @d N0. h kw Q mn ||1L \\l\.|| 9 Nm m mm1 x v I l d .Itzq/ \S CH... L.;

Jan. 17, 1961 J. F. oURY 2,968,382

TELEscoPIc CHUTE Filed Dec. 2, 1957 5 sheets-sheet s nil LLL

H A Inf/@wf- J. F. OURY TELEISCOPIC CHUTE Jan. 17, 1961 5 Sheets-Sheet 4 Filed Deo. 2, 1957 Jan. 17, 1961 I J. F. oURY 2,968,382

TELESCOPIC CHUTE Filed Dec. 2, 1957 5 Sheets-Sheet 5 Y l ,he tilted to various -1 United States Patent O 2,968,382 TELEscPIccHUTi-z 19in; Foster ogry, 259W.' North Av`e.,1-;0rfl 1niggs, nl. vsind" nec. yfla/57, so. Nb. 760,112 lilhr (Cif 3193*19) My invention relates to a transit mixer telescopic conveying chute for transit concrete mixers and mountings therefor and has particular Areference to a power actuated transit mixer conveying chute which is mounted at 'the discharge end of a transit mixerand s adapted to be contracted yinto compact form so that when mounted at the'rear end ofl a transit mixer, it is within-the width of; the transit mixer and does not project beyond the sides' thereof, thereby permittingthe legal movement of the truclrs 'over highways, streets, and the like, and which when extended,conveys the concrete discharged Vfrom the mixing drum ofthe treursit mixer ley-gravity ,fora distance, if desired; up lto twenty feet orso from the end ef the mixing 'drum thereby depositing the 'Cerlerete mixture into many positions to which it would have -to be :rrreved by Seme "other Conveying means, usually through ythe .use of fwlieelbarrews and. manual labor; thereby saving both time and labor in the laying ofoncrete fer` readsfstreets, foundations, `and ,the like s `Another object of'my` invention is the lprovision Vof a conveyor chute V adaptecrl to be attached to a transit rrtXer errdwllieh is useful Particularly inthe laying of sidewalks perallelirrs a `street and seperated from ,the street by e Parkway, i.rr the laying of fairly wide Side# walks which can be laid in sections with the concrete being conveyedI over the outer sections either before or after the concrete'mix has been laid in such sections, in the putting down Q f concrete slabs for use as garage deer-e errdirr rirsrryilreterieee, in the laying effeerrerete ietrrrddtierre Witheet rrreyerrrerrtfettlre `.eenerete andyin yylllelr instantes, the eeneret'e is diselrersed et e peint yery elese te Where .it ir! dltrrrretelyilaid errdtemped inte fidel terra .Without heirs ,delly .rooted es byelreyele trerrrdseleeetierr te driether Arrether arrdfrrrtheir. elrieet et Amy irryerrtierr .is .the rreyieierr .et .teleeeerieelly arranged ,ehtrte which "is rrrerrrited riperrtlre trerreit raiser by e eerrtleyer arrangemerit and ,Without auxiliary eliminiert Ineens Se that the outer errd ef .the ehtlte, ylrerr irl extended Posities ie et e dietiste et ,eighteen er tweirty feet'freirr'the dieeherse errd eitlie stirring, drrlrrr' end irl Wlriehtlie chure .ejerr be .rrreyed ,in .e rediel direetieri er1 "the Piyet Peint .et .tlre .elrdteee that .the eerrerete een be die'elrerged either direetly .belrirrd .the tre'rreit'mixer 0r er1 either eide ei the transit ritter .ee irreybe desired er vneeeeeerry te melee erdeperitfef die rrrirtdre Witheet irreviirg tlie rriirrer the materiel titer it lrde'lreeddieer rretrselfly elrersed frerrrtlre site drirrrrarredi@ eredi farther leitet sf rrry idr/.enden le .the ,provision 'of ajteles fy arranged chute'whic'h can n l ined positions by power mechanisrri and also `in Avs liiclr poth 'the contraction and efxtension the telescopically arranged chute is power controlled, preferablyby h dra lic vmeans whichV is under .fthe 91e rete ,e es .te ineke the .derdeit ef 'inthe proper. locfation.

he or )eet of my invention Ais the tire provisron of telescopic^ chiite preferably' semi-circulai- 2,968,382 Patented Jan. 17, 1961 in cross-section and composed of a plurality of such sections whichv are nested togetherand so mounted that they may be moved telescopically with relation to each other into both contractedY and extended positions and in so doing, the loose concreteis removed from the surfaces of at least twoof thesections during the contracting operation of the chute thereby avoiding the necessity of immediate cleaning of the sections of the chute to prevent concrete`from hardening therein and to avoid the necessityof washing out these sections of the chute whichmight be necessary if thiscleaning element were omitted.` i v lAnother and further object of my invention is the provision of a telescopic conveying chute made up of a plurality of sectionsl or units which normally are in either complete nestedy position or partially nested position, but which can easily be separated and one section removed from the other for cleaning purposes if desired.

These and other objects of my invention will'be more l fully and better understood by reference to the accompanying drawings and in which:

Fig. l is an end elevational view of a transit mixer truck with the conveyor chute'mounted thereon in `con tracted position for support purposes;

Fig. 2 is' a sideelevationalview of the end of the transit mixer and chute shown-in Fig. '1 with thechute in contracted positionextendng 'rearward from the transit mixer;- .a i t Fig. 3 is an elevational View of the rear end of a transit mixer showing ythe discharge-chute -mounted thereon in fully extended position'to deliver the concrete mixture to" one ,side of the rear of the transit mixer; Fig-4 isa top plan view-of the chute in extended position; Y t

Fig. 5 is an elevational view of ythe chute in extended position; m ,i H f Fig. 6 is a top plan view of the chute in contracted position; e

Fig-'I is a cross-sectional view through the chute in contracted position on `lines 1 7 of Fig. 6; Y

Fig. 8 isa view of the discharge end of one of th sections making up lthe chute showing the cleaning element' and stop mounted thereon; Y Fig. 9 is a partial end View of the section shown in Eig. 10 is a perspective View showing the mounting mechanismsupporting the c hute in discharge position; and 'v Fig. A11 isa perspective view showing the mounting mechanism in`v unlatched position preliminary to being placed in transit position as shown in Fig. l.

' Referring now specifically 'to `the drawings and in which like reference characters refer to like parts throughout, a` transit mixer drum 15 is shown mounted upon a truck chassis designated asa whole as 16 which chassis has a pair of vertical frame membersl]` and 1 8 thereon at the yrear end with an upper cross brace 19 and a lower cross brace 20 connecting the yframe mem;- bers 17 'and 'w18 and a collecting discharge .chute 21 having side portions 22 Vand23 which receives and directs 4the How of concrete mix as it flows from the drum 15 during the discharge operation ofthe drum through the usual rear end opening. Support plates `24 and 25 are mounted on ythe/frame members 1" 7 and 18 and to the cross braces 19 andf2'0 frthspport of'a telescopic chute hereinafter described. A'mounting lblock'26 "is'secured to the support plate 24 Iby means of a shaft 27 which extends through'the block 26 and has projecting end portions which are `mounted in bearingsV 28 `and` r29 s ecred to pillow blocks 30, 30 welded or othrwisefsecur'ed to tlie support plate24 to lforma 'rm pivotal "mountingV forthe yblock 26.` EarsI 31 and 32 ,are

Priifdedferi 9de' eide .ef tlre Meer dit tei-yhiehe'frerrie 3d 3 is mounted, the frame 33 consisting of end channel sections 34 and 35, pipes 36 and 37 welded at each of their ends to the channel sections 34 and 35 respectively with a cross brace 38 being provided to strengthen the frame 33. The channel section 34 has anges 39, 39 thereon at its ends with bolts 40, 40 passing through the flanges 39, 39 and the ears 31 and 32 on the block 26 providing a pivotal mounting for the frame 33 on the block 26. The channel section 35 has flanges 41, 41 thereon with openings 42, 42 therein, the flanges 41, 41 being adapted to co-operate with brackets 43 and 44 welded to the support plate 25 and projecting outward therefrom with a pin 45 extending through the openings 42, 42 in the anges 41, 41 and through holes in the brackets 43 and 44 by means of which pin 45, the frame 33 is removably hinged to the support plate 25 and anchors the block 26 against radial movement about the shaft 27 and provides a base for supporting the upper end of the telescopic chute hereinafter described in both its operative and inoperative positions.

A` chute pivot shaft 46 is rotatably mounted in the outer end of the block 26 having a bearing plate 47 thereon which rests in the upper edge of the block 26 and a bifurcated arm 48 being secured to the pivot shaft 46 and movable therewith. The telescopic chute designated as a whole as 49 comprises an upper primary section 50, an intermediate secondary section 51 and a lower end section 52, each of the body portions of the said sections of the chute being substantially semi-circular in cross-section, with the intermediate section 51 being supported by the primary section 50 in both the contracted and extended positions of the chute 49, while the end section 52 is supported by the intermediate section 51.

The primary section 50 of the chute has a plate 53 welded to its underside with arms 54 and 55 extending outward therefrom on each side of the arm 48 with a pin 56 connecting the arm 48 and the arms 54 and 55 thereby providing a pivotal support for the rear end of the primary chute 50. The chute section 50 has angle rails 57 and 58 along its side edges which are secured to the body of the section 50 by being welded thereto, and a yoke 59 is pro` vided which extends entirely around the section 50 intermediate its ends at a point preferably one-half of the distance between the ends of the section 50. The yoke 59 has a bottom section 60 secured thereto to which spaced angles 61 and 62 are secured and to which a piston rod 63 forming a part of a hydraulic ram 64 is secured Vby a pin 65 which extends through the end of the rod 63 and the angles 61 and 62. A cap 66 is secured to the lower end of the pivot shaft 46 by a pin 67, the cap 66 having spaced ears 68 and 69 thereon to which the rear end of the ram 64 is secured by means of a pin 70 thereby securing the ram 64 in operative position to raise and lower the chute 49 upon the pin 56 in the upper end of the arm 48. The yoke 59 has a top portion 71 to which the angles 57 and 58 are welded thereby securing the yoke 59 and primary upper section of the chute 50 together. A guide bar 72 is welded to the underside of the section 50 and extends longitudinally of the said section partially of its length while in the innerside at the edge of the section 51 at the lower end thereof, removable stop blocks 73 and 74 are provided which act as stops for the outward movement of the intermediate chute section 51 as hereinafter described.

The intermediate section 51 of the chute 49 has Ia body portion 75 generally semi-circular throughout the major portion of its length but is tapered towards its end adjacent the mixer to a somewhat narrow arcuate end and has guide plates 77 and 78 thereon extending for the length of the narrowest portion of the intermediate section 51 and adapted to operate in sliding engagement with the guide bar 72 secured to the primary section 50. A

D-shaped member 79 is welded to the body 75 of thev intermediate section 51 of the chute 49 and extends across the open side of the body portion 75 and has bearing blocks 80 and 81 mounted thereon by means of bolts 82,

82 with resilient pads 83, 83 being interposed between the blocks and 81 and the member 79. The slide blocks 80 and 81 are spaced for sliding engagement upon the angles 57 and 58 along the top edges of the primary chute section 50 for movement of the intermediate chute section 51 into extended and contracted position during the operation of the chute 49. The intermediate section 51 has angles 83a and 84 welded to its edges throughout its length for strengthening purposes and to form tracks on which the end section 52 of the chute operates as hereinafter described.

The body 75 of the section 51 has a guide bar 85 thereon at its bottom which functions to keep the end section 52 in proper alignment with the chute 50. Removable stop blocks 86, 86 are secured to the angles 83a and 84 at the outer end of the section 51 which act as stops for the outward movement of the end section 52 of the chute 50 and for movement of the section inward to contracted position of the chute 49 and for outward movement of the chute 49 to extended position.

The end section 52 of the chute 49 is composed of a body member 87 semi-circular in form for the major portion of its length but having a tapered end portion 88 with guides 89 and 90 thereon which engage the guide bar at each of its sides with a bearing block 91 being secured on the body of the section 52 which slides on the guide bar 84 during the inward and outward movement of the end section 52 of the chute 49. A D-shaped member 92 is secured to the body portion 87 of the chute section 52 and has slide blocks 93 and 94 secured thereto by means of bolts 95, 95 which slide blocks 93 and 94 n'de the angles 83a and 84 on the intermediate section 51 in the inward and outward movement of the end section 52 of the chute 49. l

A hydraulic ram 96 is provided which is mounted upon the pin 56 at its upper end and is supported by a saddle 97 intermediate its ends mounted on the yoke 59 and has a piston rod 98 therein secured to a bracket 99 in the outer end of the section 52 with a pipe connection 100 being attached to the hydraulic ram 96 having a pipe 101 with a hose 102 connecting the pipe 101 and a valve 103 under the control of the operator. A second hose 104 is connected to the hydraulic ram at its upper end through which hydraulic fluid is admitted to the upper end of the ram 96 for forcing the piston rod 98 outward.

Attached to the discharge ends of each of the chute sections 50 and 51 (Figs. 8 and 9) is an arcuate shaped wiping pad 104a preferably made of rubber or some other resilient; material and secured by rivets 105 -passing through the wiper pad 104a along one of its edges to the sections 50 and 51 with a bar 106 being placed between the wiper pad and the sections 50 and 51 to produce an outward air to the wiper pad so as to bring the forward edge of the wiper pad 104a into close contact with the inner surface of the sections 51 and 52 as they are telescoped together when the sections of the chute are brought into contracted position from extended position thus scraping these surfaces and freeing them of the concrete mix and preventing the freezing together of the sections because of the hardening of concrete left therein.

Handles 107, 107 are provided in the end chute section which are grasped by workmen for rotating the chute 49 in its axial shaft 46 whereby concrete mix is deposited in different areas rearward of the transit mixer. The rear ends 108 of the intermediate chute 51 is narrower than is the body of the chute by having its side walls reduced in height so the surface friction of the surfaces of the two chute sections S0 and 51 in sliding engagement with each other is reduced, thereby permitting easier operation of the chute 49, while the rear end 109 of the end section 52 is similarly reduced, while the receiving end V110 of the section 50 is widened somewhat to pan shape to better receive the concrete mix discharged from the transit mixer drum 15.

The operation of the device is extremely simple and generally is controlled by the operator standing at the ofgtheftruck adjacent the valve 103. Assuming thatv dr' etj. deliifered the mixture to an appropriate l 'ation for discharging the. contents. of the drum. hisi tir i s to unlatch the holding mechanism for hold- `clnitefrom swinging outward during transit, not inthe drawings, and rotate the holding block 26 ,n rection towards the center line of the transit mixer Y secur `the bracket 33 to the brackets 43 and 44 by d ppingnthge pin 45 through the openings of the bracket ,a d. .therebyJ ,anchoring the block 36 against lateral move-r nilA in either direction. In this position, the shaft 46 is directly behind thecenter of the discharged chute 21 and the chute can be moved by rotating it on the shaft 26 to any desired position within a radius o'f 180 to the rearward of the transit mixer. In the position of the chute shown in Fig. 1 of the drawings, the entire length er-nieclhtji 'snfted nf 'positionwithin rhe'width of theadjlace' ucks that there is noprojectin'g parts of 'ex ndingmt'omeither'side of the truck,- acondiseeming' prhibiteden "state, highways` and city streets; If 'it`"is 'desired to deliver the lcor'icrete onto some frame of transmitting mechanism the chute is left in contracted position because usually the transit mixer can be positioned closely enough to such a transmission device so that an extension of the chute is not necessary. However, for the delivery of the concrete mixture at a point somewhat remote from the discharging end of the concrete drum the operator, by manipulating the valve 103 admits pressure fluid into the upper end of the hydraulic ram 96 which through the action of the piston rod 98, pushes the end section 52 of the chute outward and as the end section 52 moves outward, the slide blocks 93 and 94 engage against the stops 73 and 74 on the section 51 thereby moving the sections 51 and 52 outward and in a position shown in Fig. 1. If the operator desires to lift the end of the chute, this movement is accomplished through the use of the ram 64 which pushes the piston rod 63 outward thereby lifting the chute about the pin 56 as an axis. If the operator wishes to extend the chute to its full length, he continues to admit pressure fluid to the ram 96 until the chute is extended to its complete length for delivery of the concrete mix to a sidewalk spaced from the street by a parkway, or the like, or over the outer section sidewalk for pouring the concrete to the inside section of a wide sidewalk such as is commonly used along main streets, or the like. In this position the angle of the chute is controlled by the operator manipulating the valve through the ram 64 thereby keeping the inclination of the extended chute at a sufficient angle so that concrete mix ows by gravity out of the chute and is discharged therefrom at the selected place of deposit or use of the concrete mix. The workmen who are spreading the concrete and tending to tamping it into position, by grasping the handles lil? on the side of the outer chute section 52, remove Vthe entire chute in a radialV direction so that the mix can be deposited in an area rearward of the mixer both immediately behind the transit mixer and to each side thereof. For the pouring of concrete foundations, the transit mixer can be backed into position fairly close to the walls and enough of the movement of the chute can be obtained so that either the walls' or the basement floor of such a building can be poured into position without material movement of the concrete mix used for making the walls, licor, or the like. The mounting of applicants device is of such character so that it is pivotally supported on a Vertical direction on the pins 65 and 56 with the end of the chute beyond the yoke 59 extending the outward frame on a cantilever type of structure so that the concrete mix can be delivered remote from the mixer in a very large number of instances without the necessity of shovelling the discharged mix into the position where it is iinally tamped into position, or moved to the desired point by wheelbarrows or some `other modev of conveyance. This is particularly true as respects slabs of concrete laid for foundations of garages where an entire slab of concrete can! bejpoured without handling ny, of the concrete mix by handand substantially at one operation. l Y' i 'l Y If the operator wishes to contract the chute, he reverses the valve action which admits hydraulic fluid through the valve 103 Athrough thepipe 101 to the lower end of the ram 96v which slides the end section 52 into position where the member'92abuts against the member` 7 9 on the intermediate chute`section 51 and slides'fthese sections back into contracted position with the pads 1'04a," 104i:` which are mounted on the ends' of the primary 4chute 50 and secondary chute 51, scraping'theloose concrete from the insidesurfa'ce" of` these chute sections so'that the loose concreteand the like is removed from these sections as they a're' closed and the partswipedl free of the concrete mix which, if allowed to harden`,"`inter'fere with the operi ation of the chute. When the chute sections are restored back to their'contracte'd vpojsitions'ftlie unit is unlatched by"the""removal of the pin 45 'an d` swung to one side of the concrete' mixer latched into 'position when'the transitl mixer isready to return for llingof the concrete mix to its base plant.

The cleaning of the entire chute may be advisable at the close of the day, or perhaps once a month, depending upon the use to which the transit mixer is subjected and if this is desired, the pin connecting the piston rod 98 with the bracket 99 is removed and the pins 73 also removed when both the end section 52 can be disengaged from the intermediate section 51 and, likewise, intermediate section 51 of the chute can be disengaged from the primary chute 5d and the entire chute cleaned and particles of concrete removed therefrom as may be desired. After the cleaning operation is performed, the chute can be reassembled by placing the intermediate chute in position over the end of the primary chute 50 making sure that the guides 77 are tted at each side of the rail 72 on the primary chute Sil and this section, pushed into position with the end section 52 is thereupon tted over the end section 52 in the same manner as heretofore described with respect to the intermediate section 51 and the rod 98 of the hydraulic ram 96 connected to the bracket 99 when the device is completely reassembled. In many instances it may not be necessary to extend the chute fully, or perhaps only the primary section may be used which may be at least eight feet in length may be sufiicient to deposit the concrete mix to the point desired. The carrying of the contracted chute so the ends do not project beyond the sides of the mixer truck is important which I am able to accomplish because of the pivoted mounting of the block 26 and the y'downward inclination of the chute 49.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form, the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of the invention.

What is claimed is:

1. In combination with a concrete transit mixer, a laterally movable pivotally mounted support block, a frame on said block detachably connected with the transit mixer whereby the support block is held in xed position, a chute pivot shaft mounted on said support block, a primary chute section, a yoke on said primary chute section intermediate its ends, an arm on said chute pivot to which the primary chute section is pivotally connected for vertical movement of the said chute section, a hydraulic ram secured to the lower end of the chute pivot at one of its ends and to the said yoke at its other end, a plurality of secondary chute sections telescopically connected with each other and with the primary section and a hydraulic ram connected to the arm supporting one end of the primary chute to the free end of the end secondary chute whereby the said chute is extended and contracted and a resilient wiper member secured to the discharge end of the primary chute for engagement with the inner surface of the adjacent chute as the chute is contracted.

2. In combination with a concrete transit mixer, a laterally movable pivotally mounted support block, a frame on said block detachably connected to the transit mixer whereby the support block is held in xed position, a chute pivot shaft mounted on the said support block, a primary chute section, a yoke on said primary chute section intermediate its ends, an arm on the pivot shaft pivotally connected to the said primary chute section whereby the primary chute section is vertically movable, a hydraulic ram secured to the said pivot shaft at one of its ends and pivotally connected with the said yoke at its other end, an intermediate chute telescopically secured to the primary section, an end section telescopically secured to the intermediate section, each of said intermediate and end sections being tapered at one of their ends, members encompassing the said intermediate and end sections having slide blocks thereon for engagement with the top' edges of adjoining chute sections, guide rails on the sides of the tapered ends, guide rails on the adjacent nesting sections with which the guide plates are in engagement by the encompassing member on the end chute section, a hydraulic ram secured to the said end section at one of its ends and to the primary chute at its opposite end whereby the said chute may be extended and contracted, and compressible wiper pads secured to the outer surfaces of the primary and intermediate chutes adjacent the ends thereof for wiping engagement with the inner surface of the adjacent chutes.

References Cited in the le of this patent UNITED STATES PATENTS 169,060 Thompson Oct. 19, 1875 958,137 Kirkpatrick May 17, 1910 1,401,837 Vogt Dec. 27, 1921 2,022,147 Ossing Nov. 26,` 1935 20 2,672,327 Oury Mar. 16, 1954 

